Description
number 
octdec ( string octal_string )
     Returns the decimal equivalent of the octal number
     represented by the octal_string argument.
     The largest number that can be converted is 17777777777 or 2147483647 in
     decimal.
     As of PHP 4.1.0, this function can also convert larger numbers. It returns
     float in that case.
    
     
| Example 1. octdec() example | 
<?phpecho octdec('77') . "\n";
 echo octdec(decoct(45));
 ?>
 | 
 The above example will output: | 
    
     See also:
     decoct(),
     bindec(),
     hexdec(), and
     base_convert().